Oncidium deltoideum Lindl. 1837 SECTION Rostrata
Photo by © Alexander Hirtz
Photos by © Karl Senghas and The Swiss Orchid Foundation At The Jany Renz Herbaria Website
Common Name The Delta-Like Oncidium [refers to the triangular lip]
Flower Size .6" [1.5 cm]
Found in Ecuador and Peru at elevations around 1800 to 2100 meters as a small sized, cool to cold growing epiphyte with ovate to elliptical, laterally compressed, ancipitous pseudobulbs enveloped basally by 2 pairs of foliaceous sheaths and carrying 2 to 3, apical, conduplicate, lanceolate, acute leaves that blooms on a 17 to 40" [42 to 100 cm] long, ascending to erect then nodding, paniculate, central stem fractiflex, 5 to 8 branched, rebranching, all in the apical 1/3, each branch 6 to 12 flowered, many flowered inflorescence.
Synonyms Cyrtochilum deltoideum (Lindl.) Kraenzl. 1917
References W3 Tropicos, Kew Monocot list , IPNI ; Die Orchideen Schlechter 1915; Das Pflanzenreich Odontoglossum/Oncidium Kranzlin 1917 as Cyrtochilum deltoideum drawing fide; AOS Bulletin Vol 27 No 5 1958 drawing fide; Encyclopedia of Cultivated Orchids Hawkes 1965; Rudolf Schlechter Die Orchideen Band 1C lieferung 33 - 36 2057 - 2308 Brieger 1997 photo fide; Native Ecuadorian Orchids Vol 4 Dodson 2003 photo fide; Orchids Vol 1 Koniger 2004 drawing/photo fide; Orchid Species Culture, Oncidium/Odontoglossum Alliance Baker's 2006 as Cyrtochilum deltoideum; Orchid Species of Peru Zelenko Bermudez 2009 photo
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